Room space heater



' June 28, 1960 J. HElMAN ROOM smog: HEATER Filed July 22. 1957 v (t i.

INVENTOR JORDAN HE IMAN United States Patent ROOM SPACE HEATER Jordan L. Heiman, 110 St. Ethelred Lane, Olivette, Mo.

Filed July 22, 1957, Ser. No. 673,485

1 Claim. (Cl. 126-110) This invention relates generally to space heaters and more especially to such heaters that are intended to be used for comparatively small installations, as for instance in heating stores, shops, ofiices, homes, trailers, etc.

The invention has among its broad objects the construction of a heater of the kind described that will be neat and attractive in appearance so as to harmonize with its surroundings, be simple in its construction and operation, rugged, safe in use, and will be satisfactory and eflicieut for use wherever deemed applicable.

A principal object of my invention is to so construct such a heater that it will havea combustion chamber therein for the burning of a fluid fuel, a passageway leading from said chamber to the atmosphere for the discharge of all burned gases, and a circulating fan in the heater adjacent the upper portion of the combustion chamber to forcibly circulate the room air through the heater in a direction opposite to that of the movement of said combustion gases so as to become heated by the latter prior to discharging as the heating medium of the room, the housing of said circulator being so fashioned and installed that it will have a wall that is in common with and forming one of the Walls of said passageway.

Another object of this invention is to so construct such a heater that a portion of the room air that is entrained through said circulator will be forcibly directed downwardly through a portion of said combustion chamber and be sealed from the latter and be thence discharged from the heater to the designated points that are intended to be heated.

Many other objects and advantages of the construction herein shown and described will be obvious to those skilled in the art to which this invention appertains, as will be more clearly apparent from the disclosures hereinafter given.

In the drawings, wherein like reference characters represent like or corresponding parts,

Figure l is a vertical cross-section through the heater;

Figure 2 is a transverse cross-section of the same, taken substantially along the line 2--2 of Fig. l; and

Figure 3 is another transverse cross-section, taken substantially along the line 3-3 of Fig. 1.

Referring more particularly to the drawings, wherein I have illustrated a preferred embodiment of my invention, there is shown a space heater that is uniquely adapted to be installed in a house or trailer home, although it must be understood that these are not the only places in which said heater may be used, and in the form shown the air that has been heated in its travel through the device is discharged into a floor duct for distribution to and discharged from one or more outlets, as desired.

In the instant invention there is an inner shell 1 that forms a combustion chamber within its confines, and in which suitable fluid fuel, such as oil or gas is burned by a burner 2 that is placed adjacent the lower end of the combustion chamber, said shell having an opening 3 through a bottom wall 4 for the admission of fresh atmospheric air to said burner. A top wall 5 bridges across the ice upper end of this combustion chamber and closes the same thereat except for the spaced-apart openings 6 and 7 that are sealed from one another.

There is an outer shell 20 having upright walls that are radially or transversely spaced from the upright side walls of the inner shell. Au upright wall or partition 8 is spaced between one pair of opposed upright walls of said shells, and the lower end of this partition 8 is sealed from communication with the combustion chamber by the bottom wall 9 to thereby form an upright passageway 10 between said shells for the travel of heated air, as will be hereinafter explained. A top wall 11 extends horizontally from the top of said partition 8, above said wall 5, and closes the upper end of said combustion chamber except for passage of a flue 12 therethrough, so that the inner and outer shells are sealed from one another at the top of the heater, this flue preferably extending upwardly therebeyond through the roof of the room (not shown) in which the heater is installed.

Said flue has its lower end communicating with said opening 6 to form a passageway 13 for the upward travel of the gases of combustion from the combustion chamber,

the bounding side walls of said passageway being indicated at 14 and 15. In this way, it is seen that the gases of combustion rise from the combustion chamber and travel upwardly through said passageway 13 and the flue, in sequence, before atmospheric discharge through an outlet 16 at the upper end of said flue.

An air circulator or blower 24 having an air inlet 17 that is in communication with the interior of the room in which the heater is installed and an outlet 18 in communication with the space between said inner and outer shells is mounted in the upper portion of said heater intermediate the top wall of the combustion chamber and said flue, said air so entrained through said circulator becoming heated sufficiently before its discharge into the floor duct, to effectively heat the desired spaces. There is a continuous cyclic flow of said air through the heater and room or rooms, in this manner.

It is to be especially noticed that a circumferential wall portion 31 of the housing or casing of the circulator 24 is also a portion of the wall 15 of the passageway 13 so as to be common therewith. This is advantageous inasmuch as there is not only a saving in space and materials by forming said common wall defining the boundary of the passageway and circulator housing, but because this common wall is heated directly by the flue gases there is a maximum extraction of said heat values through said casing into the path of air traveling through the circulator, and which of course increases the efliciency of the heater. An upright partition 25 extends across the top of the blower casing between a pair of the upright walls 8 to seal the flue from the intake and discharge ports of said blower, as seen in Figs. 1 and 2.

In order to get further benefit from the heat of the combustion gases flowing upwardly, an open tube or duct 19 is provided to pass through said combustion while being sealed therefrom, this duct preferably extending diagonally through said chamber from a point adjacent the top of the latter to a point above the level of the burner, the lower end of this tube communicating with the space between said shells and with the floor ducts, so as to be heated to a high degree in its passage through said duct.

Primary air for supplying the burner is received between the adjacent walls 8 and 20 which form the upright passageway 21, there being a transverse bottom wall 26 below the wall 9 so that there is an opening 27 between said walls 9 and 2% to communicate with the burner through said opening 3 through the bottom wall of the combustion chamber, the upper end of said passageway 21 having a suitable source of atmospheric air through its Although forced draft is not usually needed where gas,

ismsed as -the fuel, yet where .oil'or the likeris to beused, the -hurner efliciency-is improved by installing atan 2 3 at the bottom of the heater betweenthe lower-end of the passageway 21 and-said opening} to thereby accelerate r thereof, said one of said passageways having its lower end the velocity of airfiow therealonga An upright partition 28,;rnay be used to close 'one-end of the opening 27 so the opening 3., a

V The heater is open-at its bottom, below the wall.26, to commlmicate with an opening 29 through the door of the 11'oornz'in which the" heater is mounted, this'opening129 carrying the "heated airthrough one or more ducts 30 preferably positioned beneath the room floor 32. I claim:

- 1n a -room space heater, an inner upright first shell sealed from the latter and having a room-air intake and having'an outlet communicating with the space between said upright shells, an upright-partition between said shells to form -a pairfof'sealed-apart open-end vertical passageasto direct the entrained primary air to the burner through .41 a, ways therebetweem one of said passageways having a fresh-air intake communicating with the open upper end open, means communicating the open lower end of said one of said passageways with said first-mentioned fresh-air intake, the upper open end of the other passageway communicating with the space between said upright shells at a level below said outlet-'o'f the air circulator and receiving a portion of the; air that is-dischargedfrom said circulator for the movement o f room-airr downwardly and in contact with the exterior i of :said chamber and discharging :past the bottom of said first shell, said,.second.shell having the bottom thereof formed with'a'n outletfor the discharge of. heated air, and a ducttormin'g aflp'assage extending diagonally through said chamber and sealed therefrom, the lower end of said duct opening into said second passageway and the upper end of said duct positioned'below said outlet of said circulator and receiving a second portion of the air that is discharged from said circulator.

References'Cited in the-file of this patent 'UNITED STATES PATENTS wi p 

